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The KDM-CCA Security of the Kurosawa-Desmedt Scheme

Jinyong CHANG, Rui XUE, Anling ZHANG

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Summary :

In this letter, we prove that the Kurosawa-Desmedt (KD) scheme [10], which belongs to the hybrid framework, is KDM-CCA secure w.r.t. an ensemble proposed by Qin et al. in [12] under the decisional Diffie-Hellman assumption. Since our proof does not rely on the random oracle model, we partially answer the question presented by Davies and Stam in [7], where they hope to achieve the KDM-CCA security for hybrid encryption scheme in the standard model (i.e. not random oracle model). Moreover, our result may also make sense in practice since KD-scheme is (almost) the most efficient CCA secure scheme.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E98-A No.4 pp.1032-1037
Publication Date
2015/04/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E98.A.1032
Type of Manuscript
LETTER
Category
Cryptography and Information Security

Authors

Jinyong CHANG
  Institute of Information Engineering, Chinese Academy of Sciences,Changzhi University
Rui XUE
  Institute of Information Engineering, Chinese Academy of Sciences
Anling ZHANG
  Changzhi University

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